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Midges in spiders' web

Aphidoletes aphidimyza: several specimens hanging on one thread (closer view). (Copyright: Troy Bartlett)

From Tony Irwin:

'Hanging from spiders webs is known in a number of families of nematocerous flies. In Britain, I have found Culicidae, Limoniidae, Tipulidae and Mycetophilidae all utilising spiders' webs for resting, particularly in caves and cellars. It is possible that it is safer to overwinter suspended from a spider's web, rather than resting on the wall of the cave. Spiders have a "lower threshold" prey size, anything below which they ignore. I suspect that Aphidoletes is under that threshold for many spiders, so they are relatively safe from the spiders, and certainly safe from most other insect predators.
Looking at the photographs, it appears that Aphidoletes has strikingly pale tarsi. This is a feature shared with Dolichopeza albipes, a European tipulid that lurks in shady places (where its larvae feed on liverworts). The pale tarsi may be associated with the habit of hanging on spiders' webs, providing a distraction for larger predators such as wrens which often feed from webs.'

Note from the editor:
Tony's text was composed after seeing another image of Aphidoletes hanging from spiders' web. In this image, the tarsi of the hanging midges appeared to be white, just as in the top image in this article. I suspect that the tarsi may be pale, but that the white appearence was largely cause by the use of flash light. The other pictures in this article show that other parts of the legs may appear white as well.


Aphidoletes aphidimyza: several specimens hanging on one thread. (Copyright: Troy Bartlett)


Aphidoletes aphidimyza: male hanging on a thread (close-up). (Copyright: Troy Bartlett)


Submitted by Paul Beuk on November 21 2004 - 17:17:54
Comments
#1 | conopid on 30 October 2005 19:58:55
Brilliant. I shall be looking at more spider webs in future.Shock
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Date and time
19 February 2019 06:15
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14.02.19 11:14
hello everyone, I come back. Snowy today in Inner Mongolia, China

13.02.19 09:46
I looooove the fly in the beer irish joke in the random quotes Grin

05.02.19 11:24
Send a PM

05.02.19 09:05
I´d like to communicate with Jan Maca, who is a member here, but I can´t find any e-mail address. Could anyone help?

21.01.19 19:07
Thank you. Yes - I've done it now. The file was too large.

21.01.19 18:42
no blanks in filename, file size reduced (below 300 k or so).Did you fulfill these criteria ?

20.01.19 15:45
I've repeatedly tried to upload a photo with my thread but nothing is showing. I can't see that I've done anything wrong. Can someone please assist?

19.12.18 13:10
I might add that this is a great resource and I am really thankful for all the members help.

15.12.18 16:48
Thanks for the explanation Paul. It definitely stopped me from flooding the forum with my threads Wink

14.12.18 16:27
Each user has a maximum of ten new threads per day (24 hours). Just to prevent a single user from sending scores of his unidentified fly photos at once and thus drain out any other threads.

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